Thanks for the reply.
I did the follow the same as givne in the link.
But i couldnt get anything on the disaply.
void BuildCustom(uint8_t ucCGRAMloc, uint8_t *ucpData)
WriteData(ucpData[ i ]);
WriteData(0); // Location of LCD where the character is to be displayed
here is my code. Please guide me where am i going wrong